Collimation device and method for multi-slit diaphragm in neutron scattering spectrometer

Abstract

The invention discloses a collimation device and method for a multi-slit diaphragm in a neutron scattering spectrometer, and the device comprises an optical input end, an optical output end, a motion assembly connected with the multi-slit diaphragm, and a computer. The optical input end is used for outputting a laser beam, the laser beam passes through one multi-slit diaphragm to the optical output end, and the optical output end is used for forming an image according to the laser beam; the computer is used for acquiring the actual center position of the multi-slit diaphragm corresponding to each image according to each image; and the plurality of motion assemblies are controlled to move according to the plurality of actual center positions, so that the plurality of multi-slit diaphragms are adjusted to be aligned by taking the actual center position of one of the plurality of multi-slit diaphragms as a reference. Therefore, the relative position precision of the plurality of multi-slit diaphragms of the neutron scattering spectrometer is improved, and the measurement precision of the neutron scattering spectrometer is further improved.

Description

technical field [0001] The invention relates to the technical field of neutron scattering spectrometers, in particular to a collimation device and method for multi-slit apertures in neutron scattering spectrometers. Background technique [0002] The Very Small Angle Scattering Spectrometer (VSANS) of the China Spallation Neutron Source can study materials such as polymers and biomacromolecules in the range of 1 to 1000 nm, and can be widely used in physics, chemistry, and materials. , biomedicine, polymers, environmental protection and archaeology and other scientific research fields. [0003] In the scatter spectrometer, there are 12 multi-slit apertures (Multi-slit, MS) that are not equidistantly distributed on its 12.3-meter-long neutron beamline. The problem is that the positions of the 12 multi-slit apertures cannot be well collimated to a straight line at present, which makes the measurement accuracy of the scattering spectrometer far from meeting the requirements. ...

AI Technical Summary

Problems solved by technology

[0003] In the scatter spectrometer, there are 12 multi-slit apertures (Multi-slit, MS) that are not equidistantly distributed on its 12.3-meter-long neutron beamline. The problem is that the positions of the current 12 multi-slit apertures cannot be well aligned to a straight line, which makes the measurement accuracy of the scattering spectrometer far from meeting the requirements

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